Physics

Problem

A research laser delivers a single pulse of

45\,\text{MJ}

to a target. What is the corresponding loss of mass of the laser system? (Take

c = 3.0 \times 10^8\,\text{m\,s}^{-1}

.) a)

1.5\times10^{-9}\,\text{kg}

4.5\times10^{-10}\,\text{kg}

5.0\times10^{-10}\,\text{kg}

5.0\times10^{-9}\,\text{kg}